In addition to inventing the Walkman, Sony also (apparently) invented the side-firing/vertical/call-it-what-you-will headphone. These headphones stay in your ears (yes in, not over) without needing to be press-fit like corks in wine bottles. They became somewhat popular among exercisers decades ago, which may explain why the disappearance of the headphones is so vociferously protested: the more sedentary users of other styles of headphones have long since died. ;-) As someone who refuses to hang up his running shoes despite the protestations of his knees, I too was alarmed by the disappearance of Sonys side firing headphones. If needs be, I could run without running shoes, but without side-firing headphones? Horrors! For me, at least, the Koss KPH14 headphones are a perfectly adequate replacement. I do not know how the Koss headphones compare with the similar Sonys, nor do I think it is possible to make a comparison: over the years Sony would move the manufacture of their headphones from one exploited third world country to another such that the question Are the Kosses better than the Sonys? begs the retort Which Sonys and when?. Ive used the Koss headphones for a couple of years, and I have no complaints whatever about their sound quality. Im also totally satisfied with their construction quality. Despite using them at least -- or at most ;-) -- once a week for years, and often rinsing them after use, Ive only had two pairs fail. One failed after I drove forty miles with its cord accidentally dangling out of my car door and bouncing across the asphalt, and the second failed when I snagged its cord on an immovable object while I was moving. The Koss headphones do have two notable/questionable quirks. First is the very generous length of their cord. If the cord is too short for you, good luck with your basketball career. Second is the size of their headband. As has been mentioned numerous times by others, the headband adjusts from very small to small. As a person with a large head and short hair, I am just able to achieve a comfortable fit by gently bending the headband around its middle and thereabouts. Bending them without heating the plastic risks breaking them, but one grows cocky with practice. Wearing them without bending them would not be at all comfortable. Other than heating the headband a bit before bending them, I have not found the more extreme methods mentioned by others necessary. One difference on the Koss KPH14 headphones is its connector. Rather than use a straight 1/8 (aka 3.5mm, if youre a Commie ;-) connector, or a ninety degree connector, the Koss uses an approximately 45 degree connector. This is of no concern to me, but I thought it worth mentioning. Almost forgot: my recollection is that Sony made several different side-firing headphones with speakers of different diameters. The diameter of the speakers on the Sony MDR-W08 were, as I recall, of the smallest sizes produced. I have not measured them, but the Koss speakers are of a very similar size; possibly identical.